Locomotive.



D. T. FISHER.

LOGOMOTIVE.

APPLIGATION FILED APR. 16, 1910.

Patented Feb. 25, 1913.

2 SHEETS8HEET 1.

D. T. FISHER.

LOCOMOTIVE.

APPLICATION FILED APR.16, 1910.

Patented Feb. 25, 1913.

avwem roz $4914 fhg,

wane/woo 6 Home;

UNITED STATES UFFICE.

DUDLEY T. FISHER, F COLUMBUS, OHIO, ASSIGNOR TO THE JEFFREY MANUFAC- TUBING COMPANY, A CORPORATION OF OHIO.

LOCOMOTIVE.

Specification of Letters Patent.

Patented Feb. 25, 1913.

1 0 all whom it may concern:

Be it known that I, DUDLEY T. FISHER, a citizen of the United States, residing at Columbus, in the county of Franklin and State of Ohio, have invented certa n new and useful Improvements in Locomotlves, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to electric locomotives of the type especially designed for use in mines and has for its object the production of a gearless locomotive with large armature and a short wheel base.

The invention therefore consists in the structure and combination of parts substantially as hereinafter set forth and claimed.

In the accompanying drawings Figure 1 represents in side elevation a locomotive embodying the present invention; Fig.2 1s a plan of the same; Fig. 3 represents in s de elevation a modification of the locomotive seen in Fig. 1; and Fig. 1 represents a vertical, transverse section through the loco motive of Fig. 3 taken in the plane indicated by the line H.

This invention contemplates the structure of a locomotive whose wheel base shall be as short as possible and whose driving wheel and armature shall be as large as possible. In the embodiment of the invention as illustrated in the drawings, the driving wheels are indicated at 3 and the guide wheels at 41 and 5. The driving wheels are preferably of wide rim and flangeless while the guide wheels are flanged and, as will be noticed, they are located as close as practicable to the driving wheels, thus giving to the locomotive a short wheel base. The short wheel base and flangeless driving wheels insure easy negotiation of shortcurves in the track or tramway. The driving wheels are journaled in fixed bearings in the frame 6 of the locomotive, Fig. 1, while the guide wheels are journaled in boxes spring mounted in said frame, the springs being gaged so that the guide wheels shall take only enough of the weight of the locomotive to insure trackage, the frame being practically balanced upon the driving axle.

The motor frame 7 may be mounted in the frame 6 in any suitable way as by means of angle bars 8 extending from side to side of the locomotive frame. The motor frame preferably extends laterally from wheel to wheel and carries at its ends field magnets 9 and 10 and at its upper and lower sides consequentpole pieces 11 and 12. By this arrangement of the field magnets the diameter of the armature is increased.

When this locomotive is used with an overhead conductor the trolley stand may be attached to the rear end of the motor frame as indicated at 13. The controller and operators seat may be located in the frame 6 at the rear end as indicated at 1 1 and 15.

The brake mechanism well adapted to the locomotive described, has two brake shoes 16 and 17 carried by levers 18 and 19 which are in turn pivoted to the sides of the frame 6. From the upper ends of the levers, rods as 20 and 21 lead back to a cross beam 22 which is mounted at its ends in guides 23. From one of these guides to the other extends connecting plate 24, through which passes a screw into the beam 22. On the end of this screw is a hand wheel 25 by means of which the brakes are operated.

If desired springs may be interposed be tween the driving axle and the locomotive frame. This may be done substantially as indicated in Figs. 3 and l wherein spring mounted journal boxes 26 for the axle are located in the frame 6. Then to provide for the consequent movement between the motor, which is fixed to the frame 6, and the axle, a sleeve as 27 larger than the axle extends around it from wheel to wheel. Upon this sleeve the armature 28 with its commutator is fixed, the sleeve being journaled for rotation in the sides of the motor frame. Upon the ends of the sleeve are fixed disks as 29 which are connected to the driving wheels 3 by means of any suitable yielding connections typified at 30. This latter manner of mounting the motor and connecting it to the driving wheels is more specifically described and illustrated in my copending application, Serial No. 555,787.

Locomotives embodying my invention are especially intended for under-ground use in mines or in freight tunnels. In locomotives of this class great power is required but at the same time the external dimensions of the locomotive must be kept within certain relatively small limits. It is also very desirable, and in fact essential, when a locomotive is being used for mines that the electrical parts of the motor be inclosed, not

only to exclude dust and dirt, but also to exclude explosive gases which are treby sparks from the commutator.

scribed there is provided a very powerful and at the same time compact motor arrangement which is inclosed in a tight casing. It will he observed that the poles at the top and at the bottom oi the motor armature are consequent ones and that, therefore, it is possible to use a very large motor armature without unduly increasing the height of thelocomotive.

The invention claimed is 1. In an electric locol'notiv'e, the combination of a locomotive trai'ne, large driving wheels located at the longitudinal center of the frame, a motor ope'ratively connected to the driving wheels and mounted for rotation concentric therewith, and small spring practical to the driving wheels.

2. In an electric locomotive, the com'hina- 2 tion of the locomotive frame, large, flange- 1 less driving wheels upon the axle of which 1 said irame practically balanced, small,

vertical longitudinal planes with the driving wheels, and springs for the journals of said guiding wheels gaged to take only suiticient weight of the locomotive to insure traclc age.

3. In an electric locomotive, the combination with the locomotive frame, of a motor frame mounted vertically therein and carry ing field magnets at its ends and consequent ing axle passed centrally through the motor frame, a large armature fixed upon said axle, flangeless driving wheels of a diameter greater than the armature fixed to the axle beyond the ends of the armature, and suitable guiding means for trackage secured to the locomotive ffame at either side of the driving wheels.

In testimony whereof I ailix my si nature, in presence of two witnesses.

DUDLEY T. FlSHER.

Witnesses E. R. MERRILL, E. P. SNIvELY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C.

flanged guiding wheels located in the same r poles at its upper and lower sides, a driv- 1 

